Members of indoor football team were injured while playing home games in Illinois. Court properly held that players were not employed by insured company due to express language of their employment contracts, and thus their claims were not compensable under Wisconsin workers' compensation law. Even though labels typed at top of first pages contract names company, the team, and not insured company, is defined as employer of players. Parol evidence should not be considered to determine meaning of facially unambiguous contracts. (ZENOFF and SCHOSTOK, concurring.)